curling and bending

[mindlessonez]

hey guys, some of my leaves aren't looking too good. one of them looks as if someone has crumbled it up and the other ones are curling back really far. rather than post a bunch of pictures with the same problems i have 2 good ones.

(i need to take a new picture to replace this one)


this one is curling back. there are a few of them on that lead and others.

any advice would be great!
EDIT!!
well i was told i left out some key things so im gunna spruce up my post a little. im growing in hydro under a 250 watt hps. the temps in my box are 75-80. my Ph is at 55.5 i have 3 plants SCRoG style. im feeding them http://www.greenair.com/genesis.htm im currently on step 2 and have 8 gallons of water with 2 tbsp per gallon.

 

[Blackvelvet]

im feeding them http://www.greenair.com/genesis.htm im currently on step 2 and have 8 gallons of water with 2 tbsp per gallon.

I don't understand. There are two types of grow...1 and 2, a micro base, and a bloom bottle. How much of each are you mixing per gallon? tbsp = tablespoon = 15ml; tsp = teaspoon = 5ml

 

[inflorescence]

Too much N can cause the claw as well as a drastic pH change.
Also, next time take a pic with the hps OFF and just use an incandescent because a lot of times a problem can be detected by the color of the leaves and the hps makes this impossible.

 

[mindlessonez]

black velvet: i was told to mix the micro base with steps 1 then 2 then 3. so currently im using step 2 and the micro base and im using tsp(sorry for my mistake) instructions on the bottle says 2 tsps per gallon of both the base and what ever stage im on.

inforescence: thanks maybe i should half my formulas to decrease the N. i'll have more pictures up as soon as the miss's gets home with the camera

 

[MynameStitch]

Ok first things first, your plants are very stretchy; which means the light source is to far above them; you don't want tall lanky plants at first cause it will cause issues later on when buds start packing on. HPS is a waste right now; I would get some fluros and grow with those for veg and then when flower use the hps and fluros.


Scrog grows have screens. I do not see a screen in this picture..... also take a picture without the HPS on so we can see the color of the plant better too

 

[Worm Eat Worm]

plants are stressed out. do you have adequate co2 transfer? and a gentle breeze blowing over them? need to have some kind of fan pointed at them because it breaks the micro fibers in the stems or whatever and then they grow back stronger. not so much wind that its bending the plants all the way over but enough to ruffle the leaves. i'm not familiar with what your feeding your plants so no comments there.

what is your water temps?

i've veged with HPS plenty of times before it works fine so not sure why your plants are stretched out like that... 250 hps for 3 plants that size should be more then enough. how far away is your light?

are you using flood and drain? how often are you watering?

 

[Blackvelvet]

I would try using 1 1/2 teaspoons of both micro base and grow #1 per gallon of water. (110 ppm n) Avoid grow #2 unless outdoors.

Your ferts are low in calcium and magnesium. You should add a low rate of cal mag like botanicare cal mag plus along with the regular ferts unless you have tap water with high amounts of cal mag already.

Manganese is low and copper is excessive in these ferts.

Raise ph closer to 6

.

 

[mindlessonez]

hey guys i took a bunch of photos for you and i can hopefully answer all your questions .

this is a good shot of the bending i was talking about


this is some curling.


these are burnt im pretty sure

heres a shot over the top of it.

after reading your guys comments i went in there and pulled a lot of the stretch down and tied some things with floss. the light is now 4 inchs away from the screen. here is some photos of what i did.








i agree with you guys that it was stretching a lot and i needed to do something about it.

velvet- when i change my rez next(Monday) i will put what you suggest in. when i have time i will head to the store this weekend to investigate the cal mag.

worm- i dont know my water temps i will also try to pick up a thermometer for it. i dont water or flood and drain i just have a 8 gallon rez under them. i also made sure you could see my fan i have blowing over them.

stitch- hopefully you can see my screen now in the new photos. as i said i lowered the light before it was almost 10 inches, and i want to put in some cfls when this grow is done im going to make some changes to the cab.

i really appreciate all your help guys!

 

[Blackvelvet]

velvet- when i change my rez next(Monday) i will put what you suggest in. when i have time i will head to the store this weekend to investigate the cal mag.

Tip #5 on their website...

If using RO, DI or soft water below 80-100 PPM add Calcium-Magnesium supplement to your feeding schedule.

I would add about 5 ml cal mag plus to the 1 1/2 teaspoons micro base and grow #1 per gallon of water.

 

[Blackvelvet]

Hooking

Hooking

The bending of the leaf tips is called hooking.

Necrosis occurs at tip and margin of leaves causing a definite hook at leaf tip. Calcium is essential for the growth of shoot and root tips (meristems). Growing point dies. Margins of young leaves are scalloped and abnormally green and, due to inhibition of cell wall formation, the leaf tips may be "gelatinous" and stuck together inhibiting leaf unfolding. Stem structure is weak and peduncle collapse or shoot topple may occur. Roots are stunted. Premature shedding of fruit and buds is common. Downward curl of leaf tips (hooking) occurs near terminal bud. ammonium or magnesium excess may induce a calcium deficiency in plants... calcium deficiency

http://cals.arizona.edu/pubs/garden/mg/damage/key.html

That's the reason you need the cal mag plus. Avoid grow #2 with ammonium.

 

[mindlessonez]

thanks a lot guys. ill do those changes and get pictures back up.